992157 has 4 divisors (see below), whose sum is σ = 1322880. Its totient is φ = 661436.

The previous prime is 992153. The next prime is 992179. The reversal of 992157 is 751299.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751299 = 3 ⋅250433.

It is a cyclic number.

It is not a de Polignac number, because 992157 - 2² = 992153 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165357 + ... + 165362.

It is an arithmetic number, because the mean of its divisors is an integer number (330720).

2⁹⁹²¹⁵⁷ is an apocalyptic number.

It is an amenable number.

992157 is a deficient number, since it is larger than the sum of its proper divisors (330723).

992157 is a wasteful number, since it uses less digits than its factorization.

992157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330722.

The product of its digits is 5670, while the sum is 33.

The square root of 992157 is about 996.0707806175. The cubic root of 992157 is about 99.7378801991.

The spelling of 992157 in words is "nine hundred ninety-two thousand, one hundred fifty-seven".